花生
生物
侧根
开枪
下调和上调
钾
营养缺乏
化学
园艺
植物
营养物
基因
突变体
拟南芥
遗传学
有机化学
生态学
作者
Lijie Li,Qian Li,Kyle E. Davis,Caitlin Patterson,Sando Oo,Wanying Liu,Jia Liu,Weihua Guo,Julia Elise Fontana,Thomas Elliott Thornburg,Isaac Seth Pratt,Fēi Li,Zhiyong Zhang,Yanzhong Zhou,Xiaoping Pan,Baohong Zhang
标识
DOI:10.3389/fpls.2021.695234
摘要
The mechanism of miRNA-mediated root growth and development in response to nutrient deficiency in peanut ( Arachis hypogaea L.) is still unclear. In the present study, we found that both nitrogen (N) and potassium (K) deficiency resulted in a significant reduction in plant growth, as indicated by the significantly decreased dry weight of both shoot and root tissues under N or K deficiency. Both N and K deficiency significantly reduced the root length, root surface area, root volume, root vitality, and weakened root respiration, as indicated by the reduced O 2 consuming rate. N deficiency significantly decreased primary root length and lateral root number, which might be associated with the upregulation of miR160, miR167, miR393, and miR396, and the downregulation of AFB3 and GRF. The primary and lateral root responses to K deficiency were opposite to that of the N deficiency condition. The upregulated miR156, miR390, NAC4, ARF2, and AFB3, and the downregulated miR160, miR164, miR393, and SPL10 may have contributed to the growth of primary roots and lateral roots under K deficiency. Overall, roots responded differently to the N or K deficiency stresses in peanuts, potentially due to the miRNA-mediated pathway and mechanism.
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